Quercus ilex, the holm oak, also evergreen oak, is a large evergreen oak native to the Mediterranean region. It is a member of the section Ilex of the genus, with acorns that mature in a single summer.
Quercus coccifera, the kermes oak or holly oak, is an oak shrub or tree in section Ilex of the genus. It has many synonyms, including Quercus calliprinos. It is native to the Mediterranean region and Northern African Maghreb, south to north from Morocco to France and west to east from Portugal to Cyprus and Turkey, crossing Spain, Italy, Libya, the Balkans, and Greece, including Crete. The Kermes oak was historically important as the food plant of Kermes scale insects, from which a red dye called crimson was obtained. The etymology of the specific name coccifera is related to the production of red cochineal (crimson) dye and derived from Latin coccum which was from Greek κόκκος, the kermes insect. The Latin -fera means 'bearer'.
Quercus dentata, also called Japanese emperor oak, daimyo oak, or Korean oak, is a species of oak native to East Asia. The name of the tree is often translated as "sweet oak" in English to distinguish it from Western varieties. It is placed in section Quercus.
Quercus × cerrioides is a hybrid oak species in the family Fagaceae. The tree is endemic to Spain. It is a conservation dependent plant threatened by habitat loss. Its parent are Q. canariensis and Q. pubescens subsp. subpyrenaica. Both parents are placed in section Quercus.
Quercus peninsularis, common name peninsular oak, is a species of oak endemic to Baja California, Mexico. It is a shrub or small tree to 10 m, occurring in mountain valleys and canyons up to 3000 m. It is placed in section Lobatae. Leaves are 5–8 cm, flat, leathery and hairy, with pointed tips and 2–5 pairs of teeth. Flowers occur in 3 cm catkins. Fruits are 1.5 cm acorns, stemless, ovoid, with hairy cupules, maturing in a year. Mature bark is reddish; young twigs are thin and hairy.
Quercus alnifolia, commonly known as the golden oak, is an evergreen oak species of Cyprus. Its common English name refers to the golden coloured lower surface of its leaves. Quercus alnifolia belongs to the endemic flora of the island and it is confined to the igneous geological complex of the Troodos Mountains. In February 2006, the parliament of Cyprus selected the golden oak to be the country's national tree.
Quercus vacciniifolia, the huckleberry oak, is a member of the Protobalanus section of genus Quercus. It has evergreen foliage, short styles, very bitter acorns that mature in 18 months, and a woolly acorn shell interior.
Quercus afares, the African oak, is a species of oak native to Algeria and Tunisia. It has a very limited distribution in the coastal mountains of the eastern Tell Atlas in Algeria, and the Mogod-Kroumerie region of northwestern Tunisia. Quercus afares is deciduous, with a corky bark, and can reach 25–30 metres in height. It grows in dense stands, associated with cork oak at elevations as low as 200 metres, and with the semi-deciduous Algerian oak (Q. canariensis) from 700 to 1600 metres elevation. Q. afares can also be found in monospecific stands, especially above 1200 metres on soils damaged by fire. It is endemic to the eastern coastal portion of the Mediterranean conifer and mixed forests ecoregion.
Quercus rotundifolia, the holm oak or ballota oak, is an evergreen oak native to the western Mediterranean region, with the majority of the population in the Iberian Peninsula and minor populations in Northwest Africa. The species was first described by Jean-Baptiste Lamarck in 1785. It is the typical species of the Iberian dehesa or montado, where its sweet-astringent acorns are a source of food for livestock, particularly the Iberian pig. Its acorns have also been used for human nourishment since the Neolithic era. It is placed in section Ilex. Some authors described it as a subspecies of Quercus ilex.
Quercus geminata, commonly called sand live oak, is an evergreen oak tree native to the coastal regions of the subtropical southeastern United States, along the Atlantic Coast from southern Florida northward to southeastern Virginia and along the Gulf Coast westward to southern Mississippi, on seacoast dunes and on white sands in evergreen oak scrubs.
Quercus franchetii, commonly known as the zhui lian li evergreen oak, is a species of oak in the Ilex section of the genus, native to a wide area of eastern Asia. It is an oak native to China, northern Thailand and Vietnam, growing at altitudes between 800 and 2,600 metres.
Quercus baloot, the holm oak or holly oak is a rare species of oak that was described by Griffith in 1848. It is classified in subgenus Cerris and section Ilex. It is native to the Himalayas from 1,000–3,000 metres (3,300–9,800 ft).
Quercus kerrii is an uncommon Asian species of tree in the family Fagaceae. It is native to Thailand and Vietnam. There are also populations in southern China that according to some authors belong to Q. kerrii but considered by others to belong to a different species, Q. helferiana.Quercus kerrii is placed in subgenus Cerris, section Cyclobalanopsis. Its Chinese name is mao ye qing gang.
Quercus aquifolioides is a species of oak native to south-central China and Tibet. It is in the subgenus Cerris, section Ilex. It is a shrub or small tree adapted to high elevations.
Quercus floribunda, called the Moru oak or Mohru oak, Tilonj oak and green oak, is a species of oak native to Afghanistan, Pakistan, India's western Himalaya, and Nepal, typically found from 2,000 to 3,000 metres above sea level. It is in the subgenus Cerris, section Ilex. An evergreen tree with a dense crown reaching 30 m (98 ft), it is an important fuelwood and fodder species.
Quercus pannosa is a species of oak native to south-central China. An evergreen tree or shrub, it is found at very high elevations, flourishing at up to 4,270 metres above sea level. It is classified in subgenus Cerris, section Ilex.
Quercus guyavifolia is a species of flowering plant in the family Fagaceae, native to south-central China. An evergreen tree reaching 15 m (50 ft), its leaves are golden-brown on their undersides, making it one of the most attractive of the golden oaks. It is placed in section Ilex.
Quercus acrodonta is a species of flowering plant in the oak genus Quercus, family Fagaceae, native to central and southern China. It is typically found growing in valleys and on mountains 300 to 2,300 m above sea level. It is an evergreen tree, occasionally a shrub, reaching 15 m (50 ft), most of its structures are covered in a tomentose yellowish-gray layer. It is placed in section Ilex.
Quercus subgenus Quercus is one of the two subgenera into which the genus Quercus was divided in a 2017 classification. It contains about 190 species divided among five sections. It may be called the New World clade or the high-latitude clade; most species are native to the Americas, the others being found in Eurasia and northernmost North Africa.
Quercus subgenus Cerris is one of the two subgenera into which the genus Quercus was divided in a 2017 classification. It contains about 140 species divided among three sections. It may be called the Old World clade or the mid-latitude clade; all species are native to Eurasia and North Africa.
